Protect a PDF with a password.
Encrypt your PDF so only people with the password can open it. Your password never leaves your device.
Use the arrows to change the order.
How to use Protect PDF
- 1
Add your files
Drop your files into the box or select them. They are opened only in your browser.
- 2
Choose your settings
Adjust the options if needed. The defaults work well for most files.
- 3
Download the result
Your new file is ready in seconds. Save it with one click.
Frequently asked questions
Is Protect PDF free?
Yes. Protect PDF is completely free, without an account, without a watermark and without a daily limit.
Are my files uploaded to a server?
No. Everything runs in your browser. Your files never leave your device, which you can verify in the “Network” tab of your browser's developer tools.
Does it work on my phone?
Yes, Protect PDF works in every modern browser on iPhone, Android, Mac, Windows and Linux. There is nothing to install.
Is there a size limit?
Each file can be up to 200 MB. Very large files are processed faster on a computer than on a phone.